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Interesting words and languages

The first word spoken on the moon was "okay". (Or not - see comments). Seoul, the South Korean capital, just means "the ca...

A tough nut to crack

We use the idiom "a tough nut to crack" to talk about problems that are difficult to solve, or to talk about people who won't do what you want them to.

However, this video is about a nut that is really tough to crack.